Hi, Welcome to HealthcareMagic Forum.
The Normal Penis size is 8.5 to 10.5 cms when not erect which comes to about 3-4 inches from head of Penis to base. Which means your Penis size is absolutely of normal Length.
Kindly do not worry and i don't think it will grow further as you have already attained maturity.
Answered: Wed, 11 May 2011
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